Cervical natriuresis does not usually go away with IUD removal. If the amount of pelvic fluid is small, it may go away; if it is large, it usually does not go away. Cervical natriuresis is usually due to long-term stimulation by chronic cervicitis, resulting in blockage of the glands in the cervical canal, the fluid can not flow out, and it is easy to form cervical natriuresis. Under normal circumstances, there are usually no obvious symptoms, and some patients may have abnormal leukorrhea and a feeling of swelling in the lower back and abdomen. Cervical natriuresis has little to do with the birth control ring and will not disappear after the ring is removed. Pelvic fluid is divided into physiological and pathological, if it is physiological pelvic fluid, the amount is small, after the removal of the IUD, it may disappear; if there is more pelvic fluid, it may be pathological, usually caused by inflammatory stimulation, in this case after the removal of the IUD, pelvic fluid usually will not disappear. If there are cervical cysts or pelvic fluid, it is recommended to consult a doctor in time, complete the relevant examinations, and clarify the cause of the disease under the guidance of a professional doctor, so as to deal with the problem in a targeted manner.